Yuck. I have never seen this with the Mohawk Gel filled cable we use. David
> -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of e...@wisp-router.com > Sent: Wednesday, May 27, 2009 8:49 PM > To: WISPA General List > Subject: Re: [WISPA] Ethernet Cabling > > Actually I think you had some gel leak out of the cable and not water. > Seen it numerous times especially after a warm summer when the gel gets > liquefied one place have 180ft vertical 5 ft horizontal and about 15ft > rolled up on a 1.5ft diameter and bottom feeding a cabinet. At the > bottom under the cable I always find some sticky mess. Never any water > tho. > > /Eje > Sent via BlackBerry from T-Mobile > > -----Original Message----- > From: "Tom DeReggi" <wirelessn...@rapiddsl.net> > > Date: Wed, 27 May 2009 21:05:42 > To: WISPA General List<wireless@wispa.org> > Subject: Re: [WISPA] Ethernet Cabling > > > Quick note on Gel fil.... > > I had a link fed by outdoor direct burial Ethernet, and the cable came > 8 > feet down from the radio, went horizontally 50 feet, dropped 5 feet to > inside penhouse roof, went horizontally100ft with several turns, then > dropped 8 feet to wall cabnet. A mistake was made during install, and > teh > CAT5 was fed into the cabner from the top instead of the bottom. Once > cable > intere the cabnet it made a right angle to mid case, where it plugged > into > lightning protector (upward into the protector). Mounted in the cabnet > below > the lightning protector was a VLAN switch. At the radio, the 1/2" thick > direct buriel fed into the trango radio pass thru. My point here is > that > there was 150 feet of horizontal cable and only about 20feet of > verticle > run. About a month later, we had a heavy rain. Several days later, the > building's service went down. I went onsite, and a drop or two of > water > dripped down into one of the ethernet switch ports from the end of teh > CAT5 > at the lightning protector, and burnt/shorted out the switch. INside > the > trango radio was mostly dry except minimal dampness arounf the CAT5 > cable. > So... condensation caused some water to build up and drop into the CAT5 > area, entered inside the CAT5 cable jacket at that point, traveled > 150ft > through the inside of the cable, just enough to short out my switch. > > So my point is.... Gell fill has a purpose. To add one more level of > protection to stop water from travelling through the inside of the > cable. > Water can find ways to get it. The Gell will also keep the water > seperated > from the inside cable wires itself so the cable does not corrode or > rust. Or > that condensated water does not make it to the inner cables. > > With that said.... Gell Fill should not be used in areas where it > travels in > a plenum/ceiling area that builds up heat, where there is significant > verticle length of cable such as telecom risers, where the CAT5 > terminates > in a space that is a traffic are, that needs to look clean, like a > client's > suite. The reason is that when the gel gets warm it starts to drip, and > oose > out of the end of the connector. It can drip into the CAT5 Jack, it can > drip > on the floor and wall, etc. And cable should always be going upward > (drip > loop) into a Jack, so gel would drip to a harmless space via gravity. > > If we are on a flat roof cell site, terminating in a penthouse, we'll > usually use gel fill, for longevity. However, we'll usually prefer to > use > non-gel for other application, so its cleaner and easier to work with. > Although the gel has a purpose, I'm not sure the reward is worth the > hassle. > > I tend to first pick the needed diameter cable for the application. > Second, > the needed durrabilty for the job. Third, insist on being shielded, and > select appropriate shield design for the job. > I rarely give a darn whether it is gel or not gel, what ever the > distributor > has at the right price, that meets the other specs. > > If the cable actually is going to be used in a direct buriel type > applciation where their is water buildup, for example barried in the > gravel > on a commercial flat roof, It would probably be advisable to us gel. > There is higher risk of cable puncture, and water intrusion. Where as > if > there are places to tie off cable, such as to blocks on roof, or > outside of > conduit, anchored to wall, strappedd to gutter, etc I generally don't > think > the gel is needed. A good cable will last a real long time, without > it.. > > Tom DeReggi > RapidDSL & Wireless, Inc > IntAirNet- Fixed Wireless Broadband > > > ----- Original Message ----- > From: "Josh Luthman" <j...@imaginenetworksllc.com> > To: "WISPA General List" <wireless@wispa.org> > Sent: Wednesday, May 27, 2009 1:31 PM > Subject: Re: [WISPA] Ethernet Cabling > > > > I've heard of people being afraid water would get inside the cable > and > > that > > is the purpose of the gel. Can't say I've ever seen water in the > line, > > but > > I know I have never looked! > > > > Josh Luthman > > Office: 937-552-2340 > > Direct: 937-552-2343 > > 1100 Wayne St > > Suite 1337 > > Troy, OH 45373 > > > > "When you have eliminated the impossible, that which remains, however > > improbable, must be the truth." > > --- Sir Arthur Conan Doyle > > > > > > On Wed, May 27, 2009 at 1:28 PM, Jayson Baker > > <jay...@spectrasurf.com>wrote: > > > >> Wouldn't it be worse if water ran down the cable? > >> > >> On Wed, May 27, 2009 at 10:13 AM, Scott Reed > <scottr...@onlyinternet.net > >> >wrote: > >> > >> > Gel filled on towers is a mess. The gel runs down the cable and > oozes > >> > out all over the inside of the connector, etc. at the bottom of > the > >> tower. > >> > > >> > Michael Baird wrote: > >> > > We are getting ready to order ethernet cabling, and looking at > some > >> > > different options for the towers and client installs. I was > wondering > >> > > what people here liked to use. Particularily I'm interested in > what > >> > > you > >> > > look for in shielding/water protection, should I get a flooded > cable, > >> if > >> > > so with what? Will the gel filled type overheat in the sun? > Should i > >> run > >> > > all of this in conduit, at least for the AP's at the towers? > >> > > > >> > > Regards > >> > > Michael Baird > >> > > > >> > > > >> > > > >> > > >> -------------------------------------------------------------------- > ------------ > >> > > WISPA Wants You! 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